AT141786B - Television broadcast procedure. - Google Patents
Television broadcast procedure.Info
- Publication number
- AT141786B AT141786B AT141786DA AT141786B AT 141786 B AT141786 B AT 141786B AT 141786D A AT141786D A AT 141786DA AT 141786 B AT141786 B AT 141786B
- Authority
- AT
- Austria
- Prior art keywords
- television broadcast
- layer
- carrier
- broadcast procedure
- subdivision
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/36—Scanning of motion picture films, e.g. for telecine
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C11/00—Auxiliary processes in photography
- G03C11/24—Removing emulsion from waste photographic material; Recovery of photosensitive or other substances
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/12—Cinematrographic processes of taking pictures or printing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/843—Television signal recording using optical recording on film
- H04N5/846—Television signal recording using optical recording on film the film moving intermittently
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/164—Rapid access processing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Photoreceptors In Electrophotography (AREA)
- Projection-Type Copiers In General (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
- Moulding By Coating Moulds (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Laminated Bodies (AREA)
- Coating Apparatus (AREA)
Description
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Fernsehiibertragungs- Verfahren.
Es ist vorgeschlagen worden bei Fernsehübertragungen unter Verwendung einer kinematographischen Aufzeichnung als t5"bertragungszwischenglied eine lichtempfindliche Schicht von möglichst geringer Dicke zu verwenden, um durch Verkürzung der für die Durchdringung der Schicht durch die
Behandlungsbäder (insbesondere des Fixierbades) erforderlichen Zeit eine Verkleinerung des Zeitintervalls zwischen Bildaufnahme und Bildzerlegung (auf der Senderseite) bzw. zwischen Bildaufzeichnung und
Bildfertigstellung (auf der Empfangsseite) zu erreichen.
Bei der weiteren Bearbeitung des Problems wurde gefunden, dass dieses Ziel auch dadurch erreicht werden kann, dass als lichtempfindliche Schicht eine solche verwendet wird, die durch Unterteilung eine grosse freie Oberfläche besitzt.
Es sind Filme bekannt, deren lichtempfindliche Schicht unterteilt ist. Es ist jedoch bisher nicht erkannt worden, dass sieh aus der Benutzung derartiger Filme bei Fernsehübertragungsverfahren besondere Vorteile ergeben. Die Erfindung beruht daher auf der Erkenntnis, dass man die photochemische Behandlung durch Vergrösserung der freien Oberfläche der lichtempfindlichen Schicht abkürzen kann. Gemäss der Erfindung wird eine in an sich bekannter Weise unterteilte lichtempfindliche Schicht für Fernsehübertragungsverfahren benutzt.
Die Unterteilung einer in diesem Sinne verwendungsfähigen Schicht kann auf verschiedenartigste Weise erreicht werden.
Sie kann beispielsweise bereits beim Aufbringen der lichtempfindlichen Schicht auf den Träger erfolgen, indem man nach bekannten Druckverfahren eine regelmässige oder unregelmässige rasterartige Verteilung des lichtempfindlichen Materials vornimmt. Die Verteilung des lichtempfindlichen Materials auf dem Druckstock kann hiebei durch besondere Eigenschaften des Druckstocks selbst oder durch auf den Druckstock wirkende Mittel (z. B. Rasterwalzen) erfolgen, in gleicher Weise natürlich auch durch entsprechende Ausgestaltung der Oberfläche des Trägers oder des Trägers selbst, welcher ganz oder teilweise porös sein kann.
Die gleiche Wirkung erreicht man durch relativ zum Träger ruhende oder bewegte Schablonen oder durch relativ zum Träger ruhende oder bewegte Verteilungsorgane mit einer Vielzahl von Austritts- öffnungen. An Stelle der Schablonen können auf dem Träger Reservagen aufgebracht werden, die einen gleichmässigen Sehichtüberzug verhindern. Das gleiche Ziel kann durch entsprechende Ausgestaltung des Trägers erreicht werden. Schliesslich kann die lichtempfindliche Schicht mittels Spritzauftrag in rastermässiger Verteilung aufgebracht werden.
Die Unterteilung kann anderseits auch an der bereits auf dem Träger befindlichen Schicht vorgenommen werden. Beispielsweise bewirkt man durch Prägung, eventuell unter Zuhilfenahme von Wärme oder Feuchtigkeit, eine Verlagerung der Schiehtteile. Man kann anderseits auch die Schicht teilweise, u. zw. zweckmässigerweise nicht parallel zur ursprünglichen Oberfläche, entfernen, z. B. mittels Schabinstrumenten.
Ein drittes Verfahren zur Erzielung der Unterteilung besteht darin, dass man die lichtempfindliche Schicht in poröser Form auf dem Träger anordnet. Die Porosität der lichtempfindlichen Schicht kann beispielsweise durch Zumischung eines Gases erfolgen, so dass die lichtempfindliche Masse in Schaumform vorliegt. Man kann der lichtempfindlichen Masse auch feste oder flüssige Zusätze in der gewünschten
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Verteilungsfeinheit zusetzen oder diese nach erfolgtem Aufbringen auf den Träger wieder heraussehaffen. beispielsweise durch Lösungsmittel oder durch Verdampfung. Natürlich können die vorgenannten Verfahren auch miteinander kombiniert werden.
Die Anforderungen an die Feinheit der Sehichtunterteilung richten sich weniger nach photographischen als vielmehr nach fernsehtechnischen Gesichtspunkten. Man wird bemüht sein, das durch
EMI2.1
Der Fortschritt der vorliegenden Erfindung ist ganz bedeutend. Während bei dünnschichtigem Film nur"flaue"Bilder entstehen können, ist man beim Anmeldungsgegenstand in der Lage, photographische Schichten normaler Dicke zu verwenden, mit denen man kontrastreiche Bilder erzeugen kann.
Damit eröffnet sieh erstmalig eine praktische Möglichkeit, auch auf der Empfängerseite, wo keine elektrischen Verstärkungsmittel zu Gebote stehen, das Zwischenfilmverfahren ohne nennenswerten Zeitverlust und ohne Bildverschlechtenmg anzuwenden.
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Television broadcasting method.
It has been proposed in television transmissions using a cinematographic recording as the transmission link to use a photosensitive layer of as small a thickness as possible in order to shorten the time for the penetration of the layer through the
Treatment baths (especially the fixing bath) required a reduction in the time interval between image recording and image decomposition (on the transmitter side) or between image recording and
Image completion (on the receiving side).
In the further processing of the problem, it was found that this aim can also be achieved in that the light-sensitive layer used is one which has a large free surface due to subdivision.
Films are known whose photosensitive layer is divided. However, it has not previously been recognized that there are particular advantages to using such films in television broadcasting operations. The invention is therefore based on the knowledge that the photochemical treatment can be shortened by increasing the free surface of the light-sensitive layer. According to the invention, a photosensitive layer subdivided in a manner known per se is used for television transmission processes.
The subdivision of a layer that can be used in this sense can be achieved in the most varied of ways.
It can be done, for example, when the photosensitive layer is applied to the support, by making a regular or irregular grid-like distribution of the photosensitive material using known printing processes. The distribution of the photosensitive material on the printing block can take place by special properties of the printing block itself or by means (e.g. anilox rollers) acting on the printing block, in the same way, of course, by appropriate design of the surface of the carrier or of the carrier itself, which can be completely or partially porous.
The same effect is achieved by stencils that are stationary or moving relative to the carrier or by distributing organs that are stationary or moved relative to the carrier and have a large number of outlet openings. In place of the stencils, reserve layers can be applied to the carrier, which prevent an even layer of visualization. The same goal can be achieved by appropriately designing the carrier. Finally, the light-sensitive layer can be applied in a grid-like distribution by means of spray application.
On the other hand, the subdivision can also be carried out on the layer already on the carrier. For example, embossing, possibly with the aid of heat or moisture, causes the shell parts to move. On the other hand, you can also partially, u. Zw. Appropriately not parallel to the original surface, remove, z. B. by means of scraping instruments.
A third method of achieving the division is to arrange the photosensitive layer in a porous form on the support. The porosity of the photosensitive layer can be achieved, for example, by admixing a gas so that the photosensitive composition is in foam form. You can add solid or liquid additives in the desired form to the photosensitive mass
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Add the fineness of distribution or remove it again after it has been applied to the carrier. for example by solvent or by evaporation. Of course, the aforementioned methods can also be combined with one another.
The requirements for the fineness of the visual subdivision are less based on photographic than on television-technical aspects. One will try to get through that
EMI2.1
The advance of the present invention is very significant. While only "faint" images can arise with thin-layer film, the subject of the application is able to use photographic layers of normal thickness with which one can produce high-contrast images.
This opens up a practical possibility for the first time, also on the receiver side, where no electrical amplification means are available, to use the interleaving process without significant loss of time and without image deterioration.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF74483D DE606203C (en) | 1932-11-16 | 1932-11-16 | Television transmission process with cinematographic recording as an intermediate transmission link |
DEF76147D DE714697C (en) | 1932-11-16 | 1933-09-01 | Arrangement for the continuous application of a light-sensitive layer on an endless carrier of constantly renewing cinematographic recordings as an intermediate transmission link in a television transmission process |
Publications (1)
Publication Number | Publication Date |
---|---|
AT141786B true AT141786B (en) | 1935-05-25 |
Family
ID=34066199
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT138711D AT138711B (en) | 1932-11-16 | 1933-10-30 | Television broadcast procedure. |
AT141786D AT141786B (en) | 1932-11-16 | 1933-10-30 | Television broadcast procedure. |
AT143227D AT143227B (en) | 1932-11-16 | 1934-08-30 | Intermediate film apparatus with an endless film strip and continuous emulsion application. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT138711D AT138711B (en) | 1932-11-16 | 1933-10-30 | Television broadcast procedure. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT143227D AT143227B (en) | 1932-11-16 | 1934-08-30 | Intermediate film apparatus with an endless film strip and continuous emulsion application. |
Country Status (6)
Country | Link |
---|---|
US (1) | US2124085A (en) |
AT (3) | AT138711B (en) |
CH (1) | CH184734A (en) |
DE (2) | DE606203C (en) |
FR (1) | FR778416A (en) |
GB (2) | GB428227A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2513176A (en) * | 1943-02-24 | 1950-06-27 | John H Homrighous | Stereoscopic television system |
GB616360A (en) * | 1945-05-02 | 1949-01-20 | Philips Nv | Improved system for facsimile communication by electro-optical means |
BE526230A (en) * | 1950-06-06 | |||
BE512486A (en) * | 1951-06-29 | |||
NL93336C (en) * | 1953-04-29 | |||
US2910964A (en) * | 1956-12-03 | 1959-11-03 | Rca Corp | Electrostatic printing |
BE551270A (en) * | 1957-01-22 | |||
US3235381A (en) * | 1962-10-25 | 1966-02-15 | Union Carbide Corp | Three-dimensional photograph and light sensitive element for preparing same |
-
1932
- 1932-11-16 DE DEF74483D patent/DE606203C/en not_active Expired
-
1933
- 1933-09-01 DE DEF76147D patent/DE714697C/en not_active Expired
- 1933-10-30 AT AT138711D patent/AT138711B/en active
- 1933-10-30 AT AT141786D patent/AT141786B/en active
- 1933-11-09 GB GB31239/33A patent/GB428227A/en not_active Expired
- 1933-11-15 GB GB31824/33A patent/GB413178A/en not_active Expired
-
1934
- 1934-08-28 CH CH184734D patent/CH184734A/en unknown
- 1934-08-30 AT AT143227D patent/AT143227B/en active
- 1934-08-31 US US742259A patent/US2124085A/en not_active Expired - Lifetime
- 1934-08-31 FR FR778416D patent/FR778416A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH184734A (en) | 1936-06-15 |
GB428227A (en) | 1935-05-09 |
DE606203C (en) | 1934-11-28 |
AT138711B (en) | 1934-09-10 |
DE714697C (en) | 1941-12-04 |
US2124085A (en) | 1938-07-19 |
GB413178A (en) | 1934-07-12 |
AT143227B (en) | 1935-10-25 |
FR778416A (en) | 1935-03-15 |
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